[jammies]

I always stay in the right lane except to pass, and I'll check my mirror and make sure there is no d-bag going 30+ km/h over the limit in the left lane who is rapidly approaching before pulling into the passing lane; if there is, I just slow down, let him pass, then drop in behind him and accelerate again.

Speeding and proper lane etiquette are two different issues. I have no problem with going 10-20 km over the limit if it's daytime, the road is dry, and visibility is good. However, as soon as you start hitting 30-40 km/hr over the limit, you are a bad driver no matter what the conditions. The key is you don't want to be the driver that stands out, whether that be from going too fast, going too slow, being in the wrong lane, stopping in a merge lane, or any other behaviour that runs the risk of other drivers having to adjust their driving to accommodate your unusual driving.

Too many speeders, especially, think "Oh I've got the reflexes and skill to drive like this with a minimal increase in danger", which isn't the point at all. By speeding like this, you stress other drivers that notice your poor driving and must compensate for it, as well as endanger other crappy drivers who don't notice your poor driving and don't take it into account while maneuvering their own vehicle. Further, most speeders overestimate their own skill at driving because they erroneously assume that not believing they are ever at fault in close calls or accidents is the same as actually not being at fault.